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    <title>40 ES6对象方法扩展</title>
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    <script>
        //1. object.is 判断两个值是否完全相等
        // console.log(Object.is(120, 120));    // true
        // console.log(Object.is(NaN, NaN));    // true
        // console.log(NaN === NaN);            // false

        //2. 0bject.assign 对象的合并
        // const config1 = {
        //     host: 'localhost',
        //     port: 3306,
        //     name: 'root',
        //     pass: 'root',
        //     test: 'test'
        // };

        // const config2 = {
        //     host: 'http://atguigu.com',
        //     port: 33060,
        //     name: 'atguigui.com',
        //     pass: 'iloveyou',
        //     test2: 'test2'
        // };
        // console.log(Object.assign(config1, config2));
        // console.log(config1);
        // console.log(config2);


        //3. object.setPrototypeof 设置原型对象 object.getPrototypeof
        // const school = {
        //     name: 'atguigu',
        // }
        // const cities = {
        //     xiaoqu: ['bj', 'sh', 'sz']
        // }
        // Object.setPrototypeOf(school, cities);
        // console.log(Object.getPrototypeOf(school));
        // console.log(school);

    </script>
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